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KX3XX

Active2x2District 3

Competitive callsign — 1 application filed with the FCC.

License HolderKONDOU, KATSUHIRO

License ClassAmateur Extra

Min. Class RequiredGeneral

LocationElm, PA

Grant DateOct 2, 2021

Expiration DateDec 23, 2031

KX3XX is a highly sought-after 2x2 format amateur radio callsign. The license is currently held by KONDOU, KATSUHIRO in Elm, PA. This callsign has attracted significant interest in the amateur radio community, with 1 vanity application filed with the FCC. The most recent was submitted by KONDOU, KATSUHIRO on Dec 5, 2011. KX3XX has 3 recorded FCC license history events.

CW & Voice Analysis

Morse Code

-.- -..- ...-- -..- -..-

CW Weight: 40 units(Moderate)

Voice Phonetics

Kilo X-ray Three X-ray X-ray

Readability: 8/10(High readability)

License History

License RenewedOct 2, 2021
License IssuedDec 23, 2011
Vanity Callsign GrantedDec 23, 2011

Vanity Application Activity

Competing applications filed with the FCC for this callsign.

KONDOU, KATSUHIROFiled Dec 5, 2011
Not awardedFCC ↗

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FCC data as of Jul 29, 2026

KX3XX FCC Vanity Status: 1 Competing Application & History